<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryRef" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="标题" prop="title">
        <el-input
          v-model="queryParams.title"
          placeholder="请输入标题"
          clearable
          @keyup.enter="handleQuery"
        />
      </el-form-item>
      <el-form-item label="摘要" prop="excerpt">
        <el-input
          v-model="queryParams.excerpt"
          placeholder="请输入摘要"
          clearable
          @keyup.enter="handleQuery"
        />
      </el-form-item>
      <el-form-item label="发布时间" prop="publishedTime">
        <el-date-picker clearable
          v-model="queryParams.publishedTime"
          type="date"
          value-format="YYYY-MM-DD"
          placeholder="请选择发布时间">
        </el-date-picker>
      </el-form-item>
      <el-form-item label="浏览数" prop="viewCount">
        <el-input
          v-model="queryParams.viewCount"
          placeholder="请输入浏览数"
          clearable
          @keyup.enter="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="Search" @click="handleQuery">搜索</el-button>
        <el-button icon="Refresh" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="Plus"
          @click="handleAdd"
          v-hasPermi="['system:posts:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="Edit"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:posts:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="Delete"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:posts:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="Download"
          @click="handleExport"
          v-hasPermi="['system:posts:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="postsList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <!-- <el-table-column label="${comment}" align="center" prop="id" /> -->
      <el-table-column label="标题" align="center" prop="title" />
      <el-table-column label="封面图" align="center" prop="coverImg">
          <template #default="scope">
            <el-image :src="getImageUrl(scope.row.coverImg)" style="width: 100px;height: 100px;"/>
        </template>
      </el-table-column>
      <el-table-column label="摘要" align="center" prop="excerpt">
        <template #default="scope">
          <span>{{ truncate(scope.row.excerpt,16) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="状态" align="center" prop="pStatus">
        <template #default="scope">
          <span>{{ scope.row.pStatus === 0 ? '草稿':'已发布' }}</span>
        </template>
      </el-table-column>
      <el-table-column label="发布时间" align="center" prop="publishedTime" width="180">
        <template #default="scope">
          <span>{{ parseTime(scope.row.publishedTime, '{y}-{m}-{d}') }}</span>
        </template>
      </el-table-column>
      <el-table-column label="浏览数" align="center" prop="viewCount" />
      <el-table-column label="备注" align="center" prop="remark" >
        <template #default="scope">
          <span>{{ scope.row.remark || '*' }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" width="200" class-name="small-padding fixed-width">
        <template #default="scope">
          <el-button link type="primary" icon="Edit" @click="handleUpdate(scope.row)" v-hasPermi="['system:posts:edit']">修改</el-button>
          <el-button v-if="scope.row.pStatus===0" link type="primary" icon="Edit" @click="handleRelease(scope.row)" v-hasPermi="['system:posts:edit']">发布</el-button>
          <el-button v-if="scope.row.pStatus===1" link type="primary" icon="CircleClose" @click="handleCancel(scope.row)" v-hasPermi="['system:posts:edit']">取消</el-button>
          <el-button link type="primary" icon="Delete" @click="handleDelete(scope.row)" v-hasPermi="['system:posts:remove']">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <pagination
      v-show="total>0"
      :total="total"
      v-model:page="queryParams.pageNum"
      v-model:limit="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改文章对话框 -->
    <el-dialog :title="title" v-model="open" fullscreen append-to-body>
      <el-form ref="postsRef" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="标签">
          <el-select
            v-model="form.tagCodes"
            multiple
            collapse-tags
            collapse-tags-tooltip
            :max-collapse-tags="3"
            placeholder="请选择文章标签"
            style="width: 300px"
          >
            <el-option
              v-for="dict in posts_tags"
              :key="dict.value"
              :label="dict.label"
              :value="dict.value"
            />
          </el-select>
        </el-form-item>
        <el-form-item label="标题" prop="title">
          <el-input v-model="form.title" placeholder="请输入标题" />
        </el-form-item>
        <el-form-item label="摘要" prop="excerpt">
          <el-input v-model="form.excerpt" placeholder="请输入摘要" />
        </el-form-item>
        <el-form-item label="封面图" prop="coverImg">
           <ImageUpload v-model="form.coverImg"></ImageUpload>
        </el-form-item>
        <el-form-item label="文章内容">
          <editor v-model="form.content" :postId="form.id" :min-height="500"/>
        </el-form-item>
        <!-- <el-form-item label="发布时间" prop="publishedTime">
          <el-date-picker clearable
            v-model="form.publishedTime"
            type="date"
            value-format="YYYY-MM-DD"
            placeholder="请选择发布时间">
          </el-date-picker>
        </el-form-item> -->
        <!-- <el-form-item label="备注" prop="remark">
          <el-input v-model="form.remark" type="textarea" placeholder="请输入内容" />
        </el-form-item> -->
      </el-form>
      <template #footer>
        <div class="dialog-footer" style="text-align: center;">
          <el-button type="primary" @click="submitForm(0)">保 存</el-button>
          <el-button v-if="form.id===null" type="success" @click="submitForm(1)">保存并发布</el-button>
          <el-button @click="cancel">取 消</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<script setup name="Posts">
import { listPosts, getPosts, delPosts, addPosts, updatePosts } from "@/api/system/posts"
import { getImageUrl } from '@/utils/imageHelp'
const { proxy } = getCurrentInstance()
const { posts_tags } = proxy.useDict("posts_tags")
const postsList = ref([])
const open = ref(false)
const loading = ref(true)
const showSearch = ref(true)
const ids = ref([])
const single = ref(true)
const multiple = ref(true)
const total = ref(0)
const title = ref("")

const data = reactive({
  form: {},
  queryParams: {
    pageNum: 1,
    pageSize: 10,
    title: null,
    content: null,
    excerpt: null,
    pStatus: null,
    publishedTime: null,
    viewCount: null
  },
  rules: {
  }
})

const { queryParams, form, rules } = toRefs(data)

function truncate(text, length = 20) {
    if (!text) return '';
    return text.length > length 
      ? text.substring(0, length) + '...'
      : text;
}

/** 查询文章列表 */
function getList() {
  loading.value = true
  listPosts(queryParams.value).then(response => {
    postsList.value = response.rows
    total.value = response.total
    loading.value = false
  })
}

// 取消按钮
function cancel() {
  open.value = false
  reset()
}

// 表单重置
function reset() {
  form.value = {
    id: null,
    title: null,
    content: null,
    excerpt: null,
    pStatus: null,
    createTime: null,
    updateTime: null,
    publishedTime: null,
    remark: null,
    viewCount: null
  }
  proxy.resetForm("postsRef")
}

/** 搜索按钮操作 */
function handleQuery() {
  queryParams.value.pageNum = 1
  getList()
}

/** 重置按钮操作 */
function resetQuery() {
  proxy.resetForm("queryRef")
  handleQuery()
}

// 多选框选中数据
function handleSelectionChange(selection) {
  ids.value = selection.map(item => item.id)
  single.value = selection.length != 1
  multiple.value = !selection.length
}

/** 新增按钮操作 */
function handleAdd() {
  reset()
  open.value = true
  // title.value = "添加文章"
}

/** 修改按钮操作 */
function handleUpdate(row) {
  reset()
  const _id = row.id || ids.value
  getPosts(_id).then(response => {
    form.value = response.data
    open.value = true
    // title.value = "修改文章"
  })
}

/** 发布按钮操作 */
function handleRelease(row) {
    form.value.id = row.id
    form.value.pStatus = 1
    if (form.value.id != null) {
      updatePosts(form.value).then(response => {
        proxy.$modal.msgSuccess("发布成功")
        getList()
      })
    }
}

/** 取消按钮操作 */
function handleCancel(row) {
    form.value.id = row.id
    form.value.pStatus = 0
    if (form.value.id != null) {
      updatePosts(form.value).then(response => {
        proxy.$modal.msgSuccess("取消发布成功")
        getList()
      })
    }
}

/** 提交按钮 */
function submitForm(type) {
  proxy.$refs["postsRef"].validate(valid => {
    if (valid) {
      if (form.value.id != null) {
        updatePosts(form.value).then(response => {
          proxy.$modal.msgSuccess("修改成功")
          open.value = false
          getList()
        })
      } else {
        form.value.pStatus = type
        addPosts(form.value).then(response => {
          proxy.$modal.msgSuccess("新增成功")
          open.value = false
          getList()
        })
      }
    }
  })
}

/** 删除按钮操作 */
function handleDelete(row) {
  const _ids = row.id || ids.value
  proxy.$modal.confirm('是否确认删除文章编号为"' + _ids + '"的数据项？').then(function() {
    return delPosts(_ids)
  }).then(() => {
    getList()
    proxy.$modal.msgSuccess("删除成功")
  }).catch(() => {})
}

/** 导出按钮操作 */
function handleExport() {
  proxy.download('system/posts/export', {
    ...queryParams.value
  }, `posts_${new Date().getTime()}.xlsx`)
}

getList()
</script>
